The purely-black IQ mean is about 85, I believe. A great deal of American blacks have some admixture of whte genes, so I think the IQ average for US blacks is in high 80s, maybe 90.

African American mean IQ is typically measured at 85 to 90. Sub-Saharan African IQs are difficult to estimate because of a number of factors, but 85 is much higher than typical estimates.